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-- 1I Additional Soil and Groundwater Investigation Work Plan Raymond Investment Corporation May 19,2006 Page 6 solution of laboratory-grade,- ade non- hos hate detergent and deionized water, and by double rinsing with P P deionized water. The purge water discharged from the well during development will be containerized in 55-gallon drums, sealed, labeled, and left on Site to await disposal pending results of laboratory analyses. A groundwater sample will be collected at least 48 hours following development of the monitoring well. Prior to sample collection, the static water level in the well will be measured to the nearest 0.01-foot with a battery-operated, water level meter. A disposable bailer will. be lowered into the well to check for floating product, petroleum odor, and/or sheen. If floating product is encountered, the thickness of the product will be measured, but no laboratory sample will be collected, The monitoring well will be purged using a clean, disposable bailer until the temperature, electrical conductivity, and pH of the water have stabilized. At least three casing volumes of water will be purged from the monitoring well. The water purged from the well will be containerized in 55-gallon drums and left on Site pending analytical results of the groundwater sample. The groundwater sample will be collected with a clean, disposable bailer and transferred to laboratory-supplied containers. Each container will be labeled for sample identification and placed in a cooler chilled with ice. Upon completion of the fieldwork, the groundwater sample will.be delivered under chain-of-custody procedures to a California-certified laboratory for analyses. 5.0 LABORATORY ANALYSES The soil and groundwater samples collected from borings will be analyzed for TPH-G, TEPH-D, TEPH- MO, and TEPH-K by EPA Method 801513, and for BTEX and gasoline oxygenates/additives by EPA Method 826013. The gasoline additives/oxygenates include methanol, ethanol, TBA, MTBE, DIPE, ETBE, TAME, and 1,2-DCA and EDB. All soil and groundwater samples, with the exception of the groundwater sample collected from monitoring well MW-4, will also be analyzed for lead by EPA Method 7420. 6.0 REPORTING Condor will prepare a report detailing the findings of the investigation and well installation to be submitted to the SJCEHD. The report will include a discussion of the field and laboratory procedures used to conduct the investigation, a discussion and presentation of the analytical results, and Il recommendations. �1� CONDOR